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FS class E.621

Type and origin
Power type	Electric
Builder	Ansaldo
Build date	1947 (rebuilt)
Total produced	5

Specifications
Configuration:
• AAR	C+C
• UIC	Co+Co
Gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Wheel diameter	1,060 mm (41.73 in)
Length	11.77 m (38 ft 7+3⁄8 in)
Loco weight	60 t (59.1 long tons; 66.1 short tons)
Electric system/s	3,000 V DC overhead line
Traction motors	6

Performance figures
Maximum speed	85 km/h (53 mph)
Power output	1,350 kW (1,810 hp) 1 hour rating

Career
Operators	FS

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The FS Class E.621 was a class of five electric locomotives of the Italian State Railways (FS). They were rebuilt in 1947 from FS Class E.620, which was originally built in 1925. The main change was conversion from 650 V DC third rail to 3,000 V DC overhead line power supply.